I dig these 30 days/meme lists because they're a good way to get to know your fellow Listal users better. Each provides some insight into their tastes, and in some cases who they are. Therefore credit is also due to all those whose similar lists I've voted for, for without those I wouldn't have been encouraged to make my own. So if I voted for your list before or after creating each of my own, thank you!
Johan's list encouraged me to get on the ball and make my own 30 day movie list so it could be included on his. I had so much fun making my movie list that I decided to create the rest of the ones listed above.